Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens includes, in an order from an object side to an image side, a first lens, a second lens having a negative refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens, and a sixth lens. The first lens is made of plastic material, the second lens is made of glass material, the third lens is made of plastic material, the fourth lens is made of glass material, the fifth lens is made of plastic material, and the sixth lens is made of plastic material. The camera optical lens further satisfies specific conditions.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to acamera optical lens suitable for handheld devices such as smart phonesand digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but the photosensitivedevices of general camera lens are no other than Charge Coupled Device(CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor),and as the progress of the semiconductor manufacturing technology makesthe pixel size of the photosensitive devices shrink, coupled with thecurrent development trend of electronic products being that theirfunctions should be better and their shape should be thin and small,miniature camera lens with good imaging quality therefor has become amainstream in the market. In order to obtain better imaging quality, thelens that is traditionally equipped in mobile phone cameras adopts athree-piece or four-piece lens structure. And, with the development oftechnology and the increase of the diverse demands of users, and underthis circumstances that the pixel area of photosensitive devices isshrinking steadily and the requirement of the system for the imagingquality is improving constantly, the five-piece, six-piece andseven-piece lens structure gradually appear in lens design. There is anurgent need for ultra-thin wide-angle camera lenses which have goodoptical characteristics and the chromatic aberration of which is fullycorrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood withreference to the following drawings. The components in the drawing arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordancewith a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lensshown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG.1;

FIG. 4 presents a schematic diagram of the field curvature anddistortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordancewith a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lensshown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown inFIG. 5;

FIG. 8 presents the field curvature and distortion of the camera opticallens shown in FIG. 5;

FIG. 9 is a schematic diagram of a camera optical lens in accordancewith a third embodiment of the present invention;

FIG. 10 presents the longitudinal aberration of the camera optical lensshown in FIG. 9;

FIG. 11 presents the lateral color of the camera optical lens shown inFIG. 9;

FIG. 12 presents the field curvature and distortion of the cameraoptical lens shown in FIG. 9.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

(Embodiment 1)

As referring to FIG. 1, the present invention provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of thepresent invention, the camera optical lens 10 comprises 6 lenses.Specifically, from the object side to the image side, the camera opticallens 10 comprises in sequence: an aperture S1, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixthlens L6. Optical element like optical filter GF can be arranged betweenthe sixth lens L6 and the image surface Si. The first lens L1 is made ofplastic material, the second lens L2 is made of glass material, thethird lens L3 is made of plastic material, the fourth lens L4 is made ofglass material, the fifth lens L5 is made of plastic material, and thesixth lens L6 is made of plastic material.

The second lens L2 has a negative refractive power, and the third lensL3 has a negative refractive power.

Here, the focal length of the whole camera optical lens 10 is defined asf, the focal length of the first lens is defined as f1. The cameraoptical lens further satisfies the following condition: 0.5≤f1/f≤5.Condition 0.5≤f1/f≤5 fixes the positive refractive power of the firstlens L1. If the upper limit of the set value is exceeded, although itbenefits the ultra-thin development of lenses, but the positiverefractive power of the first lens L1 will be too strong, problem likeaberration is difficult to be corrected, and it is also unfavorable forwide-angle development of lens. On the contrary, if the lower limit ofthe set value is to exceeded, the positive refractive power of the firstlens L1 becomes too weak, it is then difficult to develop ultra-thinlenses. Preferably, the following condition shall be satisfied,0.829≤f1/f≤3.11.

The refractive index of the second lens L2 is defined as n2. Here thefollowing condition should satisfied: 1.7≤n2≤2.2. This condition fixesthe refractive index of the second lens L2, and refractive index withinthis range benefits the ultra-thin development of lenses, and it alsobenefits the correction of aberration. Preferably, the followingcondition shall be satisfied, 1.754≤n2≤2.06.

The refractive index of the fourth lens L4 is defined as n4. Here thefollowing condition should satisfied: 1.7≤n4≤2.2. This condition fixesthe refractive index of the fourth lens L4, and refractive index withinthis range benefits the ultra-thin development of lenses, and it alsobenefits the correction of aberration. Preferably, the followingcondition shall be satisfied, 1.706≤n4≤1.965.

The thickness on-axis of the second lens L2 is defined as d3, and thetotal optical length of the camera optical lens 10 is defined as TTL.The following condition: 0.03≤d3/TTL≤0.15 should be satisfied. Thiscondition fixes the ratio between the thickness on-axis of the secondlens L2 and the total optical length TTL. When the condition issatisfied, it is beneficial for realization of the ultra-thin lens.Preferably, the condition 0.038≤d3/TTL≤0.103 shall be satisfied.

In this embodiment, the first lens L1 has a positive refractive powerwith a convex object side surface relative to the proximal axis and aconcave image side surface relative to the proximal axis.

The curvature radius of the object side surface of the first lens L isdefined as R1, the curvature radius of the image side surface of thefirst lens L1 is defined as R2. The camera optical lens 10 furthersatisfies the following to condition: −3.45≤(R1+R2)/(R1−R2)≤−0.99, whichfixes the shape of the first lens L. When the value is beyond thisrange, with the development into the direction of ultra-thin andwide-angle lenses, problem like aberration of the off-axis picture angleis difficult to be corrected. Preferably, the condition−2.16≤(R1+R2)/(R1−R2)≤−1.23 shall be satisfied.

The thickness on-axis of the first lens L1 is defined as d1, and thetotal optical length of the camera optical lens 10 is defined as TTL.The following condition: 0.04≤d1/TTL≤0.12 should be satisfied. Thiscondition fixes the ratio between the thickness on-axis of the firstlens L1 and the total optical length TTL. When the condition issatisfied, it is beneficial for realization of the ultra-thin lens.Preferably, the condition 0.06≤d1/TTL≤0.09 shall be satisfied.

In this embodiment, the second lens L2 has a negative refractive powerwith a convex object side surface relative to the proximal axis and aconcave image side surface relative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focallength of the second lens L2 is f2. The following condition should besatisfied: −10.42≤f2/f≤−2.8. When the condition is satisfied, thenegative refractive power of the second lens L2 is controlled withinreasonable scope, the spherical aberration caused by the first lens L1which has positive refractive power and the field curvature of thesystem then can be reasonably and effectively balanced. Preferably, thecondition −6.51≤f2/f≤−3.51 should be satisfied.

The curvature radius of the object side surface of the second lens L2 isdefined as R3, the curvature radius of the image side surface of thesecond lens L2 is defined as R4. The following condition should besatisfied: 3.3≤(R3+R4)/(R3−R4)≤13.09, which fixes the shape of thesecond lens L2 and can effectively correct aberration of the cameraoptical lens. Preferably, the following condition shall be satisfied,5.28≤(R3+R4)/(R3−R4)≤10.47.

The thickness on-axis of the second lens L2 is defined as d3, and thetotal optical length of the camera optical lens 10 is defined as TTL.The following condition: 0.02≤d3/TTL≤0.08 should be satisfied. Thiscondition fixes the ratio between the thickness on-axis of the secondlens L2 and the total optical length TTL. When the condition issatisfied, it is beneficial for realization of the ultra-thin lens.Preferably, the condition 0.04≤d3/TTL≤0.07 shall be satisfied.

In this embodiment, the third lens L3 has a negative refractive powerwith a concave object side surface relative to the proximal axis and aconvex image side surface relative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focallength of the third lens L3 is f3. The following condition should besatisfied: −4.36≤f3/f≤−1.38, by which the field curvature of the systemthen can be reasonably and effectively balanced. Preferably, thecondition −2.72≤f3/f≤−1.72 should be satisfied.

The curvature radius of the object side surface of the third lens L3 isdefined as R5, the curvature radius of the image side surface of thethird lens L3 is defined as R6. The following condition should besatisfied: −3.88≤(R5+R6)/(R5−R6)≤−1.24, which fixes the shape of thethird lens L3 and can effectively correct aberration of the cameraoptical lens. Preferably, the following condition shall be satisfied,−2.42≤(R5+R6)/(R5−R6)≤−1.55.

The thickness on-axis of the third lens L3 is defined as d5, and thetotal optical length of the camera optical lens 10 is defined as TTL.The following condition: 0.02≤d5/TTL≤0.07 should be satisfied. Thiscondition fixes the ratio between the thickness on-axis of the thirdlens L3 and the total optical length TTL. When the condition issatisfied, it is beneficial for realization of the ultra-thin lens.Preferably, the condition 0.03≤d5/TTL≤0.05 shall be satisfied.

In this embodiment, the fourth lens L4 has a positive refractive powerwith a convex object side surface and a convex image side surfacerelative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focallength of the fourth lens L4 is f4. The following condition should besatisfied: 0.73≤f4/f≤2.41, which can effectively reduce the sensitivityof lens group used in camera and further enhance the imaging quality.Preferably, the condition 1.17≤f4/f≤1.93 should be satisfied.

The curvature radius of the object side surface of the fourth lens L4 isdefined as R7, the curvature radius of the image side surface of thefourth lens L4 is defined as R8. The following condition should besatisfied: −0.43≤(R7+R8)/(R7−R8)≤0.26, which fixes the shape of thefourth lens L4 and can effectively correct aberration of the cameraoptical lens. Preferably, the following condition shall be satisfied,−0.27≤(R7+R8)/(R7−R8)≤0.21.

The thickness on-axis of the fourth lens L4 is defined as d7, and thetotal optical length of the camera optical lens 10 is defined as TTL.The following condition: 0.05≤d7/TTL≤0.15 should be satisfied. Thiscondition fixes the ratio between the thickness on-axis of the fourthlens L4 and the total optical length TTL. When the condition issatisfied, it is beneficial for realization of the ultra-thin lens.Preferably, the condition 0.08≤d7/TTL≤0.12 shall be satisfied.

In this embodiment, the fifth lens L5 has a positive refractive powerwith a convex object side surface and a convex image side surfacerelative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focallength of the fifth lens L5 is f5. The following condition should besatisfied: 0.44≤f5/f≤1.43, which can effectively smooth the light anglesof the camera and reduce the tolerance sensitivity. Preferably, thecondition 0.71≤f5/f≤1.15 should be satisfied.

The curvature radius of the object side surface of the fifth lens L5 isdefined as R9, the curvature radius of the image side surface of thefifth lens L5 is defined as R10. The following condition should besatisfied: 0.35≤(R9+R10)/(R9−R10)≤1.17, by which, the shape of the fifthlens L5 is fixed, further, with the development into the direction ofultra-thin and wide-angle lenses, problem like aberration of theoff-axis picture angle is difficult to be corrected. Preferably, thefollowing condition shall be satisfied, 0.57≤(R9+R10)/(R9−R10)≤0.94.

The thickness on-axis of the fifth lens L5 is defined as d9, and thetotal optical length of the camera optical lens 10 is defined as TTL.The following condition: 0.06≤d9/TTL≤0.18 should be satisfied. Thiscondition fixes the ratio between the thickness on-axis of the fifthlens L5 and the total optical length TTL. When the condition issatisfied, it is beneficial for realization of the ultra-thin lens.Preferably, the condition 0.09≤d9/TTL≤0.14 shall be satisfied.

In this embodiment, the sixth lens L6 has a negative refractive powerwith a concave object side surface and a concave image side surfacerelative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focallength of the sixth lens L6 is f6. The following condition should besatisfied: −1.19≤f6/f≤−0.39, which can effectively reduce thesensitivity of lens group used in camera and further enhance the imagingquality. Preferably, the condition −0.75≤f6/f≤−0.48 should be satisfied.

The curvature radius of the object side surface of the sixth lens L6 isto defined as R11, the curvature radius of the image side surface of thesixth lens L6 is defined as R12. The following condition should besatisfied: −1.23≤(R11+R12)/(R11−R12)≤−0.4, by which, the shape of thesixth lens L6 is fixed, further, with the development into the directionof ultra-thin and wide-angle lenses, problem like aberration of theoff-axis picture angle is difficult to be corrected. Preferably, thefollowing condition shall be satisfied, −0.77≤(R11+R12)/(R11−R12)≤−0.50.

The thickness on-axis of the sixth lens L6 is defined as d11, and thetotal optical length of the camera optical lens 10 is defined as TTL.The following condition: 0.02≤d11/TTL≤0.09 should be satisfied. Thiscondition fixes the ratio between the thickness on-axis of the sixthlens L6 and the total optical length TTL. When the condition issatisfied, it is beneficial for realization of the ultra-thin lens.Preferably, the condition 0.03≤d11/TTL≤0.07 shall be satisfied.

The focal length of the whole camera optical lens 10 is f, the combinedfocal length of the first lens L1 and the second lens L2 is f12. Thefollowing condition should be satisfied: 0.74≤f12/f≤2.24, which caneffectively avoid the aberration and field curvature of the cameraoptical lens, and can suppress the rear focal length for realizing theultra-thin lens. Preferably, the condition 1.18≤f12/f≤1.79 should besatisfied.

In this embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 5.74 mm, it is beneficial for therealization of ultra-thin lenses. Preferably, the total optical lengthTTL of the camera optical lens 10 is less than or equal to 5.48 mm.

In this embodiment, the aperture F number of the camera optical lens isless than or equal to 2.27. A large aperture has better imagingperformance. Preferably, the aperture F number of the camera opticallens 10 is less than or equal to 2.22.

With such design, the total optical length TTL of the whole cameraoptical lens 10 can be made as short as possible, thus theminiaturization characteristics can be maintained.

In the following, an example will be used to describe the camera opticallens 10 of the present invention. The symbols recorded in each exampleare as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surfaceof the first lens L1 to the image surface).

Preferably, inflexion points and/or arrest points can also be arrangedon the object side surface and/or image side surface of the lens, sothat the demand for high quality imaging can be satisfied, thedescription below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the following, the unitof the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 R d nd vd S1 ∞ d0 = −0.160 R1 2.102 d1 = 0.412 nd1 1.5449 v155.93 R2 10.855 d2 = 0.040 R3 4.663 d3 = 0.250 nd2 1.8081 v2 22.76 R43.436 d4 = 0.391 R5 −3.904 d5 = 0.230 nd3 1.6713 v3 19.24 R6 −12.807 d6= 0.062 R7 7.573 d7 = 0.493 nd4 1.7130 v4 53.87 R8 −11.746 d8 = 0.772 R913.058 d9 = 0.598 nd5 1.5352 v5 56.09 R10 −2.222 d10 = 0.815 R11 −1.610d11 = 0.310 nd6 1.5352 v6 56.09 R12 6.774 d12 = 0.130 R13 ∞ d13 = 0.210ndg 1.5168 vg 64.17 R14 ∞ d14 = 0.500

Where:

In which, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvatureradius in case of lens;

R1: The curvature radius of the object side surface of the first lensL1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lensL2;

R4: The curvature radius of the image side surface of the second lensL2;

R5: The curvature radius of the object side surface of the third lensL3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lensL4;

R8: The curvature radius of the image side surface of the fourth lensL4;

R9: The curvature radius of the object side surface of the fifth lensL5;

R10: The curvature radius of the image side surface of the fifth lensL5;

R1: The curvature radius of the object side surface of the sixth lensL6;

R12: The curvature radius of the image side surface of the sixth lensL6;

R13: The curvature radius of the object side surface of the opticalfilter GF;

R14: The curvature radius of the image side surface of the opticalfilter GF;

d: The thickness on-axis of the lens and the distance on-axis betweenthe lens;

d0: The distance on-axis from aperture S1 to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lensL3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lensL6 to the object side surface of the optical filter GF;

d13: The thickness on-axis of the optical filter GF;

d14: The distance on-axis from the image side surface to the imagesurface of the optical filter GF;

nd: The refractive index of the d line;

nd1: The refractive index of the d line of the first lens L1;

nd2: The refractive index of the d line of the second lens L2;

nd3: The refractive power index of the d line of the third lens L3;

nd4: The refractive index of the d line of the fourth lens L4;

nd5: The refractive index of the d line of the fifth lens L5;

nd6: The refractive index of the d line of the sixth lens L6;

ndg: The refractive index of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

vg: The abbe number of the optical filter GF.

Table 2 shows the aspherical surface data of the camera optical lens inthe embodiment 1 of the present invention.

TABLE 2 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 1.4191E−01  1.3972E−02 7.6821E−03 −1.2686E−02 1.8541E−02 −4.6133E−03−2.3693E−03 3.6673E−03 R2 −4.8777E+01   9.0196E−03 −1.6509E−03  2.0747E−02 −3.6156E−04  −1.1507E−02  1.0042E−02 6.8687E−03 R3−1.6811E+01  −2.8275E−02 −5.0870E−03   1.4637E−02 1.0260E−02 −5.6307E−04−2.8711E−03 1.6246E−03 R4 3.5821E−01 −6.1776E−02 −1.1208E−02  1.2430E−04 2.5529E−03  3.1062E−03  5.8363E−03 −9.8756E−03  R59.7293E+00 −1.4901E−02 −2.0670E−02  −2.1562E−02 4.3880E−03 −8.6344E−03−1.3383E−02 1.6952E−02 R6 5.8528E+01 −3.6852E−02 4.3914E−02  1.4907E−02−2.0548E−02   1.3910E−03 −2.6834E−03 2.9037E−03 R7 2.3986E+00−9.6120E−02 5.2648E−02 −2.1227E−03 −2.5709E−03  −1.1028E−04 −2.3508E−043.1055E−04 R8 −7.5964E+00  −6.9137E−02 −2.1373E−03  −7.6175E−043.4153E−03 −3.3817E−04  1.5444E−04 1.9559E−04 R9 4.3265E+01 −2.5056E−023.5755E−03 −3.7371E−03 2.3755E−04 −2.6128E−05 −9.5805E−09 2.4634E−06 R10−3.6667E−01   3.1766E−02 4.8717E−03 −1.8983E−03 2.6885E−04 −3.0586E−06−3.4875E−07 −2.1374E−07  R11 −3.0073E+00  −3.9888E−02 8.2808E−03 1.3779E−04 −6.6352E−05  −7.2918E−06  1.3143E−06 −4.4550E−08  R123.6248E+00 −3.0830E−02 3.3822E−03 −2.7186E−04 4.6251E−06 −4.3428E−06 8.1026E−07 −4.2729E−08 

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 areaspheric surface indexes.

IH: Image heighty=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, the aspheric surface of each lens surface uses theaspheric surfaces shown in the above condition (1). However, the presentinvention is not limited to the aspherical polynomials form shown in thecondition (1).

Table 3 and table 4 show the inflexion points and the arrest pointdesign data of the camera optical lens 10 lens in embodiment 1 of thepresent invention. In which, P1R1 and P1R2 represent respectively theobject side surface and image side surface of the first lens L1, P2R1and P2R2 represent respectively the object side surface and image sidesurface of the second lens L2, P3R1 and P3R2 represent respectively theobject side surface and image side surface of the third lens L3, P4R1and P4R2 represent respectively the object side surface and image sidesurface of the fourth lens L4, P5R1 and P5R2 represent respectively theobject side surface and image side surface of the fifth lens L5, P6R1and P6R2 represent respectively the object side surface and image sidesurface of the sixth lens L6. The data in the column named “inflexionpoint position” are the vertical distances from the inflexion pointsarranged on each lens surface to the optic axis of the camera opticallens 10. The data in the column named “arrest point position” are thevertical distances from the arrest points arranged on each lens surfaceto the optic axis of the camera optical lens 10.

TABLE 3 Inflexion Inflexion Inflexion point number point position 1point position 2 P1R1 0 P1R2 0 P2R1 0 P2R2 1 0.615 P3R1 0 P3R2 1 0.715P4R1 2 0.385 0.835 P4R2 1 1.175 P5R1 1 0.555 P5R2 2 1.165 2.145 P6R1 11.535 P6R2 2 0.705 3.065

TABLE 4 Arrest point number Arrest point position 1 P1R1 0 P1R2 0 P2R1 0P2R2 1 0.985 P3R1 0 P3R2 1 1.145 P4R1 0 P4R2 0 P5R1 1 0.925 P5R2 0 P6R10 P6R2 1 1.305

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 10 in the first embodiment. FIG. 4shows the field curvature and distortion schematic diagrams after lightwith a wavelength of 555 nm passes the camera optical lens 10 in thefirst embodiment, the field curvature S in FIG. 4 is a field curvaturein the sagittal direction, T is a field curvature in the meridiandirection.

Table 13 shows the various values of the embodiments 1, 2, 3, and thevalues corresponding with the parameters which are already specified inthe conditions.

As shown in Table 13, the first embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.841 mm, the full vision field image height is 3.918 mm, thevision field angle in the diagonal direction is 87.29°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

(Embodiment 2)

Embodiment 2 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 5 and table 6 show the design data of the camera optical lens 20in embodiment 2 of the present invention.

TABLE 5 R d nd vd S1 ∞ d0 = −0.160 R1 2.098 d1 = 0.411 nd1 1.5449 v155.93 R2 10.863 d2 = 0.040 R3 4.645 d3 = 0.240 nd2 1.8467 v2 23.78 R43.432 d4 = 0.393 R5 −3.901 d5 = 0.230 nd3 1.6713 v3 19.24 R6 −12.976 d6= 0.058 R7 7.644 d7 = 0.493 nd4 1.7292 v4 54.68 R8 −11.585 d8 = 0.776 R913.166 d9 = 0.599 nd5 1.5352 v5 56.09 R10 −2.221 d10 = 0.816 R11 −1.620d11 = 0.310 nd6 1.5352 v6 56.09 R12 6.774 d12 = 0.129 R13 ∞ d13 = 0.210ndg 1.5168 vg 64.17 R14 ∞ d14 = 0.500

Table 6 shows the aspherical surface data of each lens of the cameraoptical lens 20 in embodiment 2 of the present invention.

TABLE 6 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 1.4827E−01  1.4382E−02 7.7990E−03 −1.2713E−02 1.8779E−02 −4.6716E−03−2.7182E−03 3.9225E−03 R2 −4.8912E+01   9.4481E−03 −9.2437E−04  2.0395E−02 7.1034E−04 −1.2381E−02  9.8564E−03 8.0880E−03 R3−1.6785E+01  −2.8813E−02 −4.4490E−03   1.4344E−02 1.0036E−02 −8.9955E−04−2.1572E−03 1.7040E−03 R4 5.8281E−01 −6.2548E−02 −1.0347E−02 −4.8012E−04 3.5313E−03  2.3439E−03  5.9397E−03 −9.9710E−03  R59.6717E+00 −1.4807E−02 −2.0872E−02  −2.2488E−02 4.2565E−03 −1.0194E−02−1.3117E−02 1.7262E−02 R6 6.1067E+01 −3.6787E−02 4.3872E−02  1.5130E−02−2.0807E−02   1.3900E−03 −2.5545E−03 2.8939E−03 R7 2.9186E+00−9.5412E−02 5.2508E−02 −2.1605E−03 −2.5396E−03  −1.0382E−04 −2.3448E−043.0880E−04 R8 −9.4849E+00  −6.8760E−02 −2.0282E−03  −7.6822E−043.4055E−03 −3.2699E−04  1.5853E−04 1.8734E−04 R9 4.4475E+01 −2.5175E−023.5590E−03 −3.7675E−03 2.4054E−04 −2.8279E−05 −7.8886E−07 2.6256E−06 R10−3.6657E−01   3.1758E−02 4.8289E−03 −1.8872E−03 2.6978E−04 −3.1023E−06−3.6846E−07 −2.1482E−07  R11 −3.0133E+00  −3.9870E−02 8.2725E−03 1.3649E−04 −6.6315E−05  −7.3130E−06  1.3242E−06 −4.5074E−08  R123.6248E+00 −3.0727E−02 3.3700E−03 −2.7243E−04 4.7025E−06 −4.3534E−06 8.0863E−07 −4.2536E−08 

Table 7 and table 8 show the inflexion points and the arrest pointdesign data of the camera optical lens 20 lens in embodiment 2 of thepresent invention.

TABLE 7 Inflexion Inflexion Inflexion point number point position 1point position 2 P1R1 0 P1R2 0 P2R1 0 P2R2 1 0.615 P3R1 0 P3R2 1 0.715P4R1 2 0.385 0.825 P4R2 1 1.175 P5R1 1 0.555 P5R2 2 1.175 2.145 P6R1 11.535 P6R2 2 0.705 3.065

TABLE 8 Arrest point number Arrest point position 1 P1R1 0 P1R2 0 P2R1 0P2R2 1 0.985 P3R1 0 P3R2 1 1.145 P4R1 0 P4R2 0 P5R1 1 0.915 P5R2 0 P6R10 P6R2 1 1.305

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 20 in the second embodiment. FIG.8 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 20 inthe second embodiment.

As shown in Table 13, the second embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.832 mm, the full vision field image height is 3.918 mm, thevision field angle in the diagonal direction is 87.8°, it has wide-angleand is ultra-thin, its on-axis and off-axis chromatic aberrations arefully corrected, and it has excellent optical characteristics.

(Embodiment 3)

Embodiment 3 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 9 and table 10 show the design data of the camera optical lens inembodiment 3 of the present invention.

TABLE 9 R d nd vd S1 ∞ d0 = −0.160 R1 2.057 d 1= 0.402 nd1 1.5449 v155.93 R2 7.718 d2 = 0.035 R3 4.356 d3 = 0.288 nd2 1.9229 v2 18.90 R43.461 d4 = 0.405 R5 −4.085 d5 = 0.220 nd3 1.6713 v3 19.24 R6 −12.799 d6= 0.057 R7 10.302 d7 = 0.514 nd4 1.7130 v4 53.87 R8 −7.242 d8 = 0.817 R919.145 d9 = 0.615 nd5 1.5352 v5 56.09 R10 −2.337 d10 = 0.819 R11 −1.608d11 = 0.200 nd6 1.5352 v6 56.09 R12 6.546 d12 = 0.139 R13 ∞ d13 = 0.210ndg 1.5168 vg 64.17 R14 ∞ d14 = 0.500

Table 10 shows the aspherical surface data of each lens of the cameraoptical lens 30 in embodiment 3 of the present invention.

TABLE 10 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 1.0096E+00  8.0251E−03 1.0271E−02 −2.0170E−02 2.0517E−02 −3.5840E−03−1.7469E−03  3.8419E−03 R2 1.0096E+00 −1.1941E−03 −2.1134E−03  1.9632E−02 4.6655E−03  2.7445E−04 8.3306E−03 9.1961E−03 R3 1.0212E+00−2.6102E−02 6.6774E−03  1.1218E−02 5.2254E−03  2.9495E−03 6.1114E−044.3237E−03 R4 1.0212E+00 −4.5922E−02 −1.5517E−02  −1.9506E−03−3.8669E−03  −1.9957E−03 3.1698E−03 −4.6666E−03  R5 1.1824E+00−8.5480E−03 −3.8113E−02  −1.5095E−02 2.8278E−03 −1.4387E−02 −2.2520E−02 1.7149E−02 R6 1.1824E+00 −4.5922E−02 3.8176E−02  1.2428E−02 −1.7506E−02  3.1789E−03 −3.2565E−03  3.4932E−03 R7 1.4101E+00 −9.9051E−02 5.3839E−02−2.0971E−03 −2.7176E−03   8.7018E−05 −1.1286E−04  1.9612E−04 R81.4101E+00 −6.6844E−02 −1.7280E−03  −1.5123E−04 2.6018E−03 −1.2133E−042.3571E−04 1.1712E−04 R9 2.3129E+00 −2.6138E−02 5.4791E−03 −3.8055E−032.8844E−04 −2.1597E−05 2.3918E−07 3.7697E−06 R10 2.3129E+00  3.1278E−024.5373E−03 −1.8689E−03 2.3609E−04 −4.2270E−06 −1.9176E−07  −7.5748E−08 R11 3.0823E+00 −3.7703E−02 7.6674E−03  1.1766E−04 −6.4521E−05 −7.7084E−06 1.5904E−06 −6.4362E−08  R12 3.0823E+00 −3.1573E−023.6985E−03 −3.3842E−04 6.6667E−06 −4.0082E−06 7.2663E−07 −3.5479E−08 

Table 11 and table 12 show the inflexion points and the arrest pointdesign data of the camera optical lens 30 lens in embodiment 3 of thepresent invention.

TABLE 11 Inflexion Inflexion Inflexion point number point position 1point position 2 P1R1 0 P1R2 0 P2R1 0 P2R2 1 0.705 P3R1 0 P3R2 1 0.975P4R1 2 0.305 0.885 P4R2 1 1.175 P5R1 2 0.435 1.865 P5R2 1 1.135 P6R1 11.555 P6R2 2 0.715 3.025

TABLE 12 Arrest point number Arrest point position 1 Arrest pointposition 2 P1R1 0 P1R2 0 P2R1 0 P2R2 0 P3R1 0 P3R2 0 P4R1 2 0.575 1.075P4R2 0 P5R1 1 0.755 P5R2 0 P6R1 0 P6R2 1 1.325

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 30 in the third embodiment. FIG.12 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 30 inthe third embodiment.

As shown in Table 13, the third embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.875 mm, the full vision field image height is 3.918 mm, thevision field angle in the diagonal direction is 87.19°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

TABLE 13 Embodiment Embodiment 1 2 Embodiment 3 f 4.050 4.030 4.106 f14.691 4.679 5.006 f2 −17.647 −16.953 −21.381 f3 −8.375 −8.318 −8.947 f46.505 6.363 6.018 f5 3.585 3.588 3.918 f6 −2.392 −2.404 −2.384 f12 5.9566.016 6.077 (R1 + R2)/(R1 − R2) −1.480 −1.479 −1.727 (R3 + R4)/(R3 − R4)6.600 6.660 8.729 (R5 + R6)/(R5 − R6) −1.877 −1.860 −1.938 (R7 + R8)/(R7− R8) −0.216 −0.205 0.174 (R9 + R10)/(R9 − R10) 0.709 0.711 0.782 (R11 +R12)/(R11 − R12) −0.616 −0.614 −0.606 f1/f 1.158 1.161 1.219 f2/f −4.357−4.207 −5.208 f3/f −2.068 −2.064 −2.179 f4/f 1.606 1.579 1.466 f5/f0.885 0.890 0.954 f6/f −0.591 −0.596 −0.581 f12/f 1.471 1.493 1.480 d10.412 0.411 0.402 d3 0.250 0.240 0.288 d5 0.230 0.230 0.220 d7 0.4930.493 0.514 d9 0.598 0.599 0.615 d11 0.310 0.310 0.200 Fno 2.200 2.2002.190 TTL 5.213 5.205 5.220 d1/TTL 0.079 0.079 0.077 d3/TTL 0.048 0.0460.055 d5/TTL 0.044 0.044 0.042 d7/TTL 0.095 0.095 0.098 d9/TTL 0.1150.115 0.118 d11/TTL 0.059 0.060 0.038 n1 1.5449 1.5449 1.5449 n2 1.80811.8467 1.9229 n3 1.6713 1.6713 1.6713 n4 1.7130 1.7292 1.7130 n5 1.53521.5352 1.5352 n6 1.5352 1.5352 1.5352 v1 55.9299 55.9299 55.9299 v222.7608 23.7779 18.8969 v3 19.2429 19.2429 19.2429 v4 53.8671 54.680053.8671 v5 56.0934 56.0934 56.0934 v6 56.0934 56.0934 56.0934

It is to be understood, however, that even though numerouscharacteristics and advantages of the present exemplary embodiments havebeen set forth in the foregoing description, together with details ofthe structures and functions of the embodiments, the disclosure isillustrative only, and changes may be made in detail, especially inmatters of shape, size, and arrangement of parts within the principlesof the invention to the full extent indicated by the broad generalmeaning of the terms where the appended claims are expressed.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side in sequence: a first lens, a second lens having anegative refractive power, a third lens having a negative refractivepower, a fourth lens, a fifth lens, and a sixth lens; wherein the cameraoptical lens further satisfies the following conditions:0.5≤f1/f≤5;1.7≤n2≤2.2;1.7≤n4≤2.2;0.03≤d3/TTL≤0.15; where f: the focal length of the camera optical lens;f1: the focal length of the first lens; n2: the refractive index of thesecond lens; n4: the refractive index of the fourth lens; d3: thethickness on-axis of the second lens; TTL: the total optical length ofthe camera optical lens.
 2. The camera optical lens as described inclaim 1, wherein the first lens is made of plastic material, the secondlens is made of glass material, the third lens is made of plasticmaterial, the fourth lens is made of glass material, the fifth lens ismade of plastic material, the sixth lens is made of plastic material. 3.The camera optical lens as described in claim 1 further satisfying thefollowing conditions:0.829≤f1/f<3.11;1.754≤n2≤2.06;1.706≤n4≤1.965;0.038≤d3/TTL≤0.103.
 4. The camera optical lens as described in claim 1,wherein first lens has a positive refractive power with a convex objectside surface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:−3.45≤(R1+R2)/(R1−R2)≤−0.99;0.04≤d1/TTL≤0.12; where R1: the curvature radius of object side surfaceof the first lens; R2: the curvature radius of image side surface of thefirst lens; dl: the thickness on-axis of the first lens; TTL: the totaloptical length of the camera optical lens.
 5. The camera optical lens asdescribed in claim 4 further satisfying the following conditions:−2.16≤(R1+R2)/(R1−R2)≤−1.23;0.06≤d1/TTL≤0.09.
 6. The camera optical lens as described in claim 1,wherein the second lens has a convex object side surface and a concaveimage side surface; the camera optical lens further satisfies thefollowing conditions:−10.42≤f2/f≤−2.8;3.3≤(R3+R4)/(R3−R4)≤13.09;0.02≤d3/TTL≤0.08; where f: the focal length of the camera optical lens;f2: the focal length of the second lens; R3: the curvature radius of theobject side surface of the second lens; R4: the curvature radius of theimage side surface of the second lens; d3: the thickness on-axis of thesecond lens; TTL: the total optical length of the camera optical lens.7. The camera optical lens as described in claim 6 further satisfyingthe following conditions:−6.51≤f2/f≤−3.51;5.28≤(R3+R4)/(R3−R4)≤10.47;0.04≤d3/TTL≤0.07.
 8. The camera optical lens as described in claim 1,wherein the third lens has a concave object side surface and a conveximage side surface; the camera optical lens further satisfies thefollowing conditions:−4.36≤f3/f≤−1.38;−3.88≤(R5+R6)/(R5−R6)≤−1.24;0.02≤d5/TTL≤0.07; where f: the focal length of the camera optical lens;f3: the focal length of the third lens; R5: the curvature radius of theobject side surface of the third lens; R6: the curvature radius of theimage side surface of the third lens; d5: the thickness on-axis of thethird lens; TTL: the total optical length of the camera optical lens. 9.The camera optical lens as described in claim 8 further satisfying thefollowing conditions:−2.72≤f3/f≤−1.72;−2.42≤(R5+R6)/(R5−R6)≤−1.55;0.03≤d5/TTL≤0.05.
 10. The camera optical lens as described in claim 1,wherein the fourth lens has a positive refractive power with a convexobject side surface and a convex image side surface; the camera opticallens further satisfies the following conditions:0.73≤f4/f≤2.41;−0.43≤(R7+R8)/(R7−R8)≤0.26;0.05≤d7/TTL≤0.15; where f: the focal length of the camera optical lens;f4: the focal length of the fourth lens; R7: the curvature radius of theobject side surface of the fourth lens; R8: the curvature radius of theimage side surface of the fourth lens; d7: the thickness on-axis of thefourth lens; TTL: the total optical length of the camera optical lens.11. The camera optical lens as described in claim 10 further satisfyingthe following conditions:1.17≤f4/f≤1.93;0.27≤(R7+R8)/(R7−R8)≤0.21;0.08≤d7/TTL≤0.12.
 12. The camera optical lens as described in claim 1,wherein the fifth lens has a positive refractive power with a convexobject side surface and a convex image side surface; the camera opticallens further satisfies the following conditions:0.44≤f5/f≤1.43;0.35≤(R9+R10)/(R9−R10)≤1.17;0.06≤d9/TTL≤0.18; where f: the focal length of the camera optical lens;f5: the focal length of the fifth lens; R9: the curvature radius of theobject side surface of the fifth lens; R10: the curvature radius of theimage side surface of the fifth lens; d9: the thickness on-axis of thefifth lens; TTL: the total optical length of the camera optical lens.13. The camera optical lens as described in claim 12 further satisfyingthe following conditions:0.71≤f5/f≤1.15;0.57≤(R9+R10)/(R9−R10)≤0.94;0.09≤d9/TTL≤0.14.
 14. The camera optical lens as described in claim 1,wherein the sixth lens has a negative refractive power with a concaveobject side surface and a concave image side surface; the camera opticallens further satisfies the following conditions:−1.19≤f6/f≤−0.39;−1.23≤(R11+R12)/(R11−R12)≤−0.4;0.02≤d11/TTL≤0.09; where f: the focal length of the camera optical lens;f6: the focal length of the sixth lens; R11: the curvature radius of theobject side surface of the sixth lens; R12: the curvature radius of theimage side surface of the sixth lens; d11: the thickness on-axis of thesixth lens; TTL: the total optical length of the camera optical lens.15. The camera optical lens as described in claim 14 further satisfyingthe following conditions:−0.75≤f6/f≤−0.48;−0.77≤(R11+R12)/(R11−R12)≤−0.5;0.03≤d11/TTL≤0.07.
 16. The camera optical lens as described in claim 1further satisfying the following condition:0.74≤f12/f≤2.24; where f12: the combined focal length of the first lensand the second lens; f: the focal length of the camera optical lens. 17.The camera optical lens as described in claim 16 further satisfying thefollowing condition:1.18≤f12/f≤1.79.
 18. The camera optical lens as described in claim 1,wherein the total optical length TTL of the camera optical lens is lessthan or equal to 5.74 mm.
 19. The camera optical lens as described inclaim 18, wherein the total optical length TTL of the camera opticallens is less than or equal to 5.48 mm.
 20. The camera optical lens asdescribed in claim 1, wherein the aperture F number of the cameraoptical lens is less than or equal to 2.27.
 21. The camera optical lensas described in claim 20, wherein the aperture F number of the cameraoptical lens is less than or equal to 2.22.